Quick-acting wrench.



15. Nonwoon. QUIGK AOTIN'G WRENCH. APPLICATION FILED JUNE 21, 1904. RENEWED TAN. 24,1906.

PATENTED JUNE 19, 1906.

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ffta W @L AM UNITED STATES PATENT OFFICE;

rnnnnnic nonwoon, OF GLOUCESTER, MASSACHUSETTS.

, QUICK-ACTINGYWRENCH.

Specification of Letters Patent.

Patented June 19. 1906.

Application filed June 21,1904. Renewed January 24:,1906r Serial No. 297,612.

T0 or, whom it may concern:

Be it known that I, Fnnnnnrc Noawoon, a

citizen of the United States, residing in simple and efficient wrench which can be adjusted to the work substantially in an instant. The invention is herein shown as embodied in a monkey-wrench provided with a shank having threaded and non-threaded portions upon which is fitted a movable jaw, and a threaded nut having an enlargement which permits disengagement of the nut from the threaded portions of the shank, and thereby enables the nut and movable jaw to be moved bodily longitudinally on said shank.

. These and other features of this invention will be pointed out in the claim at the end of this specification.

Figure 1 be side elevation of one form of wrench embodying this invention; Fig. 2, a cross-section on the line 2 2, Fig. 1, showing the parts in their engaged position; Fig.3, a cross-section showing the parts in their disengaged position; Fig. 4, an elevation. of a modified form of wrench embodying this invention; and Fig. ,5, a cross-section on the line 5 5, Fig. 4.

Referring to Figs. 1, 2, and 3, a represents the fixed jaw, and b the movable jaw, of a wrench embodying this invention.

In the construction shown'in Fig. 1 the movable jaw b is mounted to slide freely on the shank c, affixed to the jaw a, and is held in its adjusted position by a nut d, provided, as herein shown, with an annular flange e, which is engaged by inwardly-extended lips or flanges f, located substantially diametrically opposite on the jawl). The nut d is provided on its interiorwith screw-threads g,

which extend about the inner nut for the.

greater portion of its inner circumference and which are adapted to engage screwthreads h on substantially diametrically opposite portions of the shank c, which is made substantially oblong in cross-section vandflis provided with plain or unthreaded portions or sides i, substantially at right angles to thethreaded portions. The nut d is provided on its interior with an outwardlyextended recess or enlargement is of a width substantially equal to the narrower width of the shank, and in the present instance the recess 7c is represented as substantially tapering or converging to receive the narrower edge of the shank a when said recess is brought into alinement with' the narrower edge of said shank.

In Fig. 2 the nut is shown in the position it occupies when the movable jaw is in its operative position; (Shown in Fig. 1.) If now it is desired to adjust the jaw l) with relation to the jaw a, the nut is partially rotated or turned from the position shown in Fig. 2 into that shown in Fig. 3, and when the recess 7c is brought into linewith the narrow side of the shank c the said nut is moved laterally with relation to the shank, or vice versa, until the threaded portion on the opposite or wider side of the shank is disengaged" from the screw-threads of thenut, whereupon the nut d and the jaw b connected therewith may be moved bodily toward or away from the fixed jaw and into the desired position, and when brought into such position the nut is moved laterally in the opposite direction to again engage the threads on the rear side of the shank, after which the said nut may be turned to remove the recess from in line with the threaded front side of the shank. Further movement of the jaw 6 toward the fixed jaw may be effected by rotating the nut in the usual manner, which is permitted by the rear edgeof the shank being wider than the recess 7c in the nut.

In Fig. 1 I have represented the movable jaw as separate from the nut d; but, if desired, said jaw and nut may be made in one piece, as represented in Figs. 4 and 5. So, also, the fixed jaw a may be integral with the shank, as represented in Fig. 1, or it may be separate therefrom and secured thereon by a pin m, the said jaw resting against a shoulder a on said shank c. The wrench may be provided with a suit-able handle 0.

From the above description it will be seen that the movable jaw may be quickly ad.- j'usted toward or from the fixed jaw by a rotary movement, followed by a bodily movement longitudinally of the shank and independent of said rotary movement, and that such adjustment may be made substantially in an instant.

I claim In a wrench of the class described, in combination, a fixed jaw, a shank having a narrow front edge and a wider rear edge provided with threads, a movable jaw, and a nut threaded on its interior to engage the threads of said shank and provided with a recess of a width sufficient to receive the narrow threaded edge of said shank and not suffieient to receive the wider threaded edge of said shank, for the purpose specified.

In testimony whereof I have signed my 15 name to this specification in the presence of two subscribing witnesses.

FREDERIC NORWOOD.

Witnesses:

J AS. H. CHURCHILL, J. MURPHY 

